A construction machinery hydraulic oil cylinder bottom forging die

Abstract

The invention relates to the technical field of forging and processing, in particular to a forging die for the bottom of a hydraulic oil cylinder of a construction machinery. An upper indenter and a lower indenter are respectively arranged at the corresponding positions in the vertical direction in the cavity, and the upper indenter and the lower indenter process the through hole; the slider, which is slidably arranged on the lower mold in the horizontal direction, is at least partially located in the cavity Inside, the slider is provided with a side indenter at one end located in the cavity, and the side indenter processes the slot; wherein, the slider is provided with a slope section at the top, and the upper mold is correspondingly provided with a first slope at the slope section, When the upper mold moves downward, the slope section cooperates with the first inclined surface, and drives the slider to move horizontally in the direction close to the cavity. In the present invention, two forging processes are omitted, preventing extrusion deformation of the cylinder bottom shape forged for the first time by the second forging, and at the same time, no transfer is required after forging, and the processing process of the blank is safer.

Description

technical field [0001] The invention relates to the technical field of forging and processing, in particular to a forging die for the bottom of a hydraulic oil cylinder of a construction machinery. Background technique [0002] Forging is a processing method that uses forging machinery to apply pressure to metal blanks to plastically deform them to obtain forgings with certain mechanical properties, certain shape and size. Forging can eliminate the defects such as loose as-cast and incomplete forming of the metal during the smelting process, and optimize the microstructure. At the same time, due to the preservation of the complete metal streamline, the mechanical properties of forgings are generally better than those of castings of the same material. For important parts with high load and severe working conditions in related machinery, forgings are mostly used in addition to rolling plates, profiles or welded parts with simple shapes. [0003] like figure 1 As shown, in ad...

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Problems solved by technology

[0003] like figure 1 As shown, the cylinder bottom 5 of the engineering machinery hydraulic cylinder has a through hole 51 and a groove 52 in addition to its own shape and outline. In the prior art, the forging process of the cylinder bottom 5 is usually a cylindrical blank The material is heated to a high temperature, and then the shape of the cylinder bottom is processed through a forging die, and the through hole 51 is initially processed, and then the groove 52 is processed through the second forging die, and finally the through hole 51 is punched , during the two forging processes, the second forging will squeeze and deform the shape of the cylinder bottom 5 forged for the first time, and the transfer of the billet between the two forgings is usually a manual operation, due to Blank material temperature is higher, more dangerous in the process of transfer

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